1969 engine & interior questions

[69Special]

Hi. Just my 2nd post (I posted in the new user section). I am having a hard time finding some numbers and information for GM/GMC trucks. I'll just number my questions so they're easier to respond to.

ENGINE
1) Did Chevy and GMC use the same engine codes and casting numbers in 1969? I'm guessing yes?

2) I just purchased a '69 GMC Camper Special. I am told it has a 396 in it. What are the correct casting numbers for the block and the heads. Also, I assume there's a suffix and date code stamped on the block as well like the Chevrolet passenger cars?

If someone could provide me with at least the potential block casting numbers for '69 and the suffix codes, that'd be great. I have Chevy By The Numbers, but sadly, that doesn't apply to trucks.

INTERIOR
The worst part of my soon to be truck is the butcher job they did on the interior. Put ridiculous padding on the doors, changed out the seat, put in crappy carpeting.

1) What color was the metal on the interior painted? Did it match the outside color or was it painted to match the color of the interior fabric? I believe my truck interior should be Saddle. Exterior appears to always have been white, although I haven't confirmed it.

2) Like the GM cars, is there a trim tag stating all of this information, or does one rely on the glovebox door sticker. I've only seen mine in photos, so I haven't had a chance to see what it exactly says.

3) Dash gauge cluster face--for some reason, mine is blue at the moment. I'm not sure if this was taken out of a blue interior or painted. If my interior should be saddle, what color should the dash face be? Was there a saddle colored one or was it just black.

Also, if someone has some pics of an unmolested '69 interior, I'd love to see them.

Well, that's all for now. Thanks.